Facility of execution and prolific invention were the essential traits of Crawford's genius. For some years his studio has been one of the shrines of travellers at Rome, because of the number and variety as well as excellence of its trophies. The idea has been suggested, and it is one we hope to see realized, that this complete series of casts should be permanently conserved in such a temple as Copenhagen reared to the memory of her great sculptor. It was on account of this facility and fecundity that Crawford advocated plaster as an occasional substitute for bronze and marble, where elaborate compositions were proposed. He felt capable of achieving so much, his mind teemed with so many panoramic and single conceptions,--historical, allegorical, ideal, and illustrative of standard literature or classical fable,--that only time and expense presented obstacles to unlimited invention. Perhaps no one can conceive this peculiar creativeness of his fancy and aptitude of hand, who has not had occasion to talk with Crawford of some projected monument or statue. No sooner was he possessed of the idea to be embodied, the person or occasion to be commemorated, than he instantly conceived a plan and drew a model, invariably possessing some felicitous thought or significant arrangement. His sketch-book was quite as suggestive of genius as his studio. The "Sketch of a Statue to crown the Dome of the United States Capitol"--a photograph of which is before us as we write, dated two years ago--is an instance in point. A more grand figure, original and symbolic, graceful and sublime, in attitude, aspect, drapery, accessories, and expression, or one more appropriate, cannot be imagined; and yet it is only one of hundreds of national designs, more or less mature, which that fertile brain, patriotic heart, and cunning hand devised. We are justified in regarding the appropriation by the State of Virginia, for a monument to Washington by such a man, as an epoch in the history of national Art. Crawford hailed it as would a confident explorer the ship destined to convey him to untracked regions, the ambitious soldier tidings of the coming foe, or any brave aspirant a long-sought opportunity. It is one of the drawbacks to elaborate achievement in sculpture, that the materials and the processes of the art require large pecuniary facilities. To plan and execute a great national monument, under a government commission, was precisely the occasion for which Crawford had long waited. Happening to read the proposals in a journal, while on a visit to this country, he repaired immediately to Richmond, submitted his views, and soon received the appointment.